49 lines
No EOL
1.4 KiB
TypeScript
49 lines
No EOL
1.4 KiB
TypeScript
import {computed, watch, readonly} from 'vue'
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import {useStorage, createSharedComposable, usePreferredColorScheme, tryOnMounted} from '@vueuse/core'
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import type {BasicColorSchema} from '@vueuse/core'
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const STORAGE_KEY = 'color-scheme'
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const DEFAULT_COLOR_SCHEME_SETTING: BasicColorSchema = 'light'
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const CLASS_DARK = 'dark'
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const CLASS_LIGHT = 'light'
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// This is built upon the vueuse useDark
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// Main differences:
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// - usePreferredColorScheme
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// - doesn't allow setting via the `isDark` ref.
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// - instead the store is exposed
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// - value is synced via `createSharedComposable`
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// https://github.com/vueuse/vueuse/blob/main/packages/core/useDark/index.ts
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export const useColorScheme = createSharedComposable(() => {
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const store = useStorage<BasicColorSchema>(STORAGE_KEY, DEFAULT_COLOR_SCHEME_SETTING)
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const preferredColorScheme = usePreferredColorScheme()
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const isDark = computed<boolean>(() => {
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if (store.value !== 'auto') {
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return store.value === 'dark'
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}
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const autoColorScheme = preferredColorScheme.value === 'no-preference'
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? DEFAULT_COLOR_SCHEME_SETTING
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: preferredColorScheme.value
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return autoColorScheme === 'dark'
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})
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function onChanged(v: boolean) {
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const el = window?.document.querySelector('html')
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el?.classList.toggle(CLASS_DARK, v)
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el?.classList.toggle(CLASS_LIGHT, !v)
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}
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watch(isDark, onChanged, { flush: 'post' })
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tryOnMounted(() => onChanged(isDark.value))
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return {
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store,
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isDark: readonly(isDark),
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}
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}) |